Yeah some Lifan 125, ZongShen 125, YX125 and Loncin 125 part's can interchange with some of the Ducar parts
Biggest differences are in the piston and gudgeon sizes, and the heads/barrels
well so far the lifan has got the same head as mine the one with out the big lift valve so im happy with that jsut got to work out what staor and wirring kit next thanks
Lifan head looks similar to the Ducar but has bolt on rocker covers, your's has screw on, and yeah valves and cam are different possibly timing gear too ?